1. Assign the \"n\" value to each of the following in plant reproduction: a. Spo
ID: 180558 • Letter: 1
Question
1. Assign the "n" value to each of the following in plant reproduction: a. Sporophyte b. Gametophyte c. Sporangium d. Spores e, Zygote g. Primary endosperm h, Pollen i. Microspore mother cells in the anthers j. Antipodal another (expanding their host range) Viruses that originate in one organism and then pass to 2. and cause disease are called a. Inducing viruses b. Converging viruses c. Emerging viruses d. Diverging viruses 3. Which of the following isare correct matches? capsid. may or a. Virion: infectious particles that contain nucleic acid, proteinaceous and may not contain an envelop alone with no protein capsid or b. Viroid: infectious particles that contain naked RNA envelop nucleic acid or envelop c. Prion: infectious particles that contain protein alone with no d. All of the above are correct These bacteria can 4. Bacterium Ecoli is benign and commonly found in our large intestine. This process by however become virulent when infected with introduction which a bacteriophage may change a benign bacterium into a virulent strain due to of new genes is called a. phage conversion b. lysogeny c. replication 5. HIV d. induction white blood cells whereas envelop glycoprotein helps HIV gain entry into human the protein helps Influenza virus gain entry into human cells. a. CD4; neuraminidase b. Gp120; hemagglutinin c. CCR5; hemagglutinin d. Gp120: CD4Explanation / Answer
Answer:
Answer:
1.
a. Spoophyte: 2n
b. Gametophyte: n
c. Sporangium: 2n
d. Spores: n
e. Zygote: 2n
f. Archegonium: 2n
g. Primary endosperm: 3n
h. Pollen: n
i. Microspre mother cells in the anther: 2n
j. Antipodal cells: n
2). C. Emerging viruses
Emerging viruses originate in one organism and pass to another thus expanding their host range.
3. d. all of the above correct
4). A. Phage conversion
In some interactions between lysogenic phages and bacteria, lysogenic conversion may occur, which can also be called phage conversion. It is when a temperate phageinduces a change in the phenotype of the infected bacteria that is not part of a usual phage cycle.
5). a. CD4; neuraminidase
HIVs use different molecules, including CD4 receptors and chemokine co-receptors, to gain entry into a human susceptible cell causing infection. Influenza virions bind to sialic acid (also known as N-acetyl neuraminic acid) on the cell surface and are endocytosed.
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